Liquid Supply Component Filter Compression Injection Molding
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Solution Overview
Problem
Existing methods for manufacturing liquid supply components face challenges in maintaining a stable effective area of filters due to variations in resin infiltration, which affects the efficiency and accuracy of the manufacturing process.
Innovation Solution
A manufacturing method involving injection molding of configuration components between metal molds, interposing a filter between opening portions, compressing it between facing surfaces, and pouring molten resin in a compressed state to ensure consistent filter area and high dimension accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If molten resin is actively infiltrated into the circumference of the filter, then two configuration components are bonded together and the space is sealed, but the effective area of the filter varies
Solution Approach 1:
The filter is pre-compressed between the first and second configuration components before injecting the molten resin. This preliminary compression reduces the filter's volume and prevents resin infiltration, ensuring that the filter's effective area remains stable and consistent throughout the bonding process.
Solution Approach 2:
The compression applied to the filter before resin injection creates a counteracting force that prevents the molten resin from infiltrating into the filter's circumference. This preliminary anti-action ensures that the filter maintains its intended effective area while still allowing the resin to bond the configuration components together.
2Manufacturing precision
If filter is compressed between facing surfaces before pouring molten resin, then effective area of filter is stabilized and resin infiltration is suppressed, but manufacturing process becomes more complex
Solution Approach 1:
The compression of the filter and the injection molding process are merged into a single integrated operation. The first and second configuration components are positioned with the filter between them, compressed together, and then the molten resin is injected to bond all three elements simultaneously. This combining of steps simplifies the overall manufacturing process while maintaining precision.
3Reliability
If filter is compressed between facing surfaces, then resin infiltration into filter is suppressed, but joining process requires precise positioning of configuration components
Solution Approach 1:
The first and second configuration components are pre-positioned with their opening portions facing each other, and the filter is placed between them before compression. This preliminary positioning ensures that when compression is applied, the filter is correctly located and compressed uniformly, preventing resin infiltration while maintaining reliable joining.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach stabilizes the effective area of the filter, suppresses resin infiltration into the filter, and enhances manufacturing efficiency and accuracy of liquid supply components, ensuring reliable ink supply and ejection in liquid ejection heads.
Implementation Method 1
a first step of performing injection molding with respect to the first configuration component in a first position between a pair of metal molds, and of performing injection molding with respect to the second configuration component in a second position between the pair of metal molds
Implementation Method 2
a fourth step of closing the pair of metal molds such that the filter is compressed between facing surfaces of the first configuration component and the second configuration component
Implementation Method 3
The molten resin is actively infiltrated into the circumference of the filter, and thus, a space between two configuration components and the filter is sealed
Data Source
AI summary
A filter is compressed between facing surfaces of a first configuration component and a second configuration component, and a molten resin is poured in such a compressed state. Injection molding of the first configuration component and the second configuration component, joining of the configuration components, and sealing of the circumference of the filter are performed by a pair of metal molds.